Pneumatic tire including blocks and splitting grooves

Details Pneumatic tire including blocks and splitting grooves Pneumatic tire including blocks and splitting grooves

Filed on

2006-04-11

Date issued

2006-04-11

Examiner

Maki, Steven D. (Department: 1733)

Patent Class

Resilient tires and wheels

SubClass

Tires, resilient

SubSubClass

Anti-skid devices

Other Related Categories

C152S209220, C152S209270, C152SDIG020

Type

Reexamination Certificate

Status

active

Patent number

07025100

Description

ABSTRACT:
A pneumatic tire is provided in the tread portion with a circumferential row of middle tread elements, wherein each of the middle tread elements is divided into four elemental blocks having different configurations, by three splitting grooves, and the three splitting grooves are: a longitudinal splitting groove extending between the lateral grooves; an axially inner lateral splitting groove extending axially outwardly from the axially inner circumferential main groove beyond the longitudinal splitting groove and terminating before the axially outer circumferential main groove; and an axially outer lateral splitting groove extending axially inwardly from the axially outer circumferential main groove beyond the longitudinal splitting groove and terminating before the axially inner circumferential main groove.

REFERENCES:
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patent: 5109903 (1992-05-01), Watanabe et al.
patent: 5308416 (1994-05-01), Baumhofer et al.
patent: 5526860 (1996-06-01), Minami
patent: 6415834 (2002-07-01), Carra et al.
patent: 6739364 (2004-05-01), Tsuda
patent: 0 599 566 (1994-01-01), None
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patent: 0 887 209 (1998-12-01), None
patent: 8-183312 (1996-07-01), None
patent: 11-245625 (1999-09-01), None
patent: 2001-039123 (2001-02-01), None

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